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According to the controversial sunspot theory, great storms or eruptions on the surface of the sun hurl streams of solar particles into space and eventually into the atmosphere of our planet, causing shifts in the weather on the Earth and interference with radio and television communications.

1.What is the author’s main purpose in the passage?

A. To propose a theory to explain sunspots

2. The word controversial in paragraph 1 is closet in meaning to?

C.  Just introduced

3. Solar particles are hurled into space by ?

D. Changes in the Earth’s atmosphere 

4. The word particles in paragraph 1 refer to ?

C. Liquid streams on the sun 

5. How can we describe matter from the sun that enters the Earth’s atmosphere?

D. Very hard 

6. What does the author mean by the statement Actually, the sunspots are cooler than the rest of the photosphere, which may account for their apparently darker color?

C.  The color of sunspots could be affected by their temperature. 

7. The word they in the paragraph 2 refers to ?

A. Structure

8. The word consequently in the paragraph 2 could best be replaced by?

D.  In this way

9. In which configuration do sunspots usually occur?

A. In one spot of varying size

10.  How are sunspots explained?

A. Sunspots appear to be related to magnetic fields on the Earth.

11. The sunspot theory is ?

B. Widely accepted

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Recent technological advances in manned and unmanned undersea vehicles, along with breakthroughs in satellite technology and computer equipment, have overcomesome of the limitations of divers and diving equipment for scientist’s research on the great oceans of the world. Without a vehicle

1.    A. Technological advances in oceanography
2. C. Slow moving
3. A. The pressure affected their speech organs
4. A. Vehicle as well as divers
5. D. Make direct observations of the ocean floor
6. A. Travel at a constant speed
7. C. By operators outside the vehicle on a diving platform
8. C. A model of the ocean’s movements

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Fertilizer is any substance that can be added to the soil to provide chemical elements essential for plant nutrition so that the yield can be increased. Natural substances such as animal droppings, ashes from wood fires, and straw have been used as fertilizers in fields for thousands of years, and lime has been used since Romans introduced it during the Empire

1. With which of the following topics in the passage primarily concerned?
D. Content, form, and effects of fertilizer
2. The word essential in the paragraph 1 could best be replaced by which of the following?|
C. Anticipated
3. Which of the following has the smallest percentage content in the formula 4-8-2?
A. Nitrogen
4. What is the percentage of nitrogen in a 5-8-7 formula fertilizer?
A. 3 percent
5. The word designate in the paragraph 2 could best be replaced by ?
B. Specify
6. Which of the following statements about fertilizer is true?
C. Liquids are increasing in popularity.
7. The word they in the paragraph 2 refers to?
A. Powder
8. The word convenient in paragraph 2 is closest in meaning to?
C.  Easy to use

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The development of the horse has been recorded from the beginning through all of its evolutionary stages to the modern form. It is, in fact, one of the most complete and well-documented chapters of paleontological history.

1. A. The evolution of the horse
2. D. They maintain a record of life prior to the Miocene Age
3. D. Influence
4. A.  Horses appeared long before human beings according to the theories of geologists.
5. C.  There were horses in North America when the first European colonists arrived.
6. C.  Nonexistent
7. C.  Pleistocene Period was prior to the Pliocene

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few men have influenced the development of American English to the extent that Noah Webster did. Born in West Hartford, Connecticut, in 1758, Webster graduated from Yale in 1778. He was admitted to the bar in 1781 and thereafter began to practice law in Harford. Later, when he turned to teaching, he discovered how inadequate the available schoolbooks were for the children of a new and independent nation

1. b. Webster’s Dictionary
2. c. Difficult
3. d. The children did not know how to spell.
4. b. An American Dictionary of the English Language
5. c. Steady
6. c. 1828
7. d. Dictionary
8. c. Different
9. a. Develop

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The San Andreas Fault line is a fracture at the congruence of two major plates of the Earth’s crust, one of which support most of the North American continent, and the other of which underlies the coast of California and Par of the ocean floor of the Pacific Ocean.

1. A. To describe the San Andreas Fault
2. A. A plate that underlies the North American continent
3. C. Begins
4. C. North
5. D. Fault
6. C. Uncommon
7. B. Rare, but disastrous
8. A. A serious earthquake
9. C. Wide

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The Acacia, a genus of trees and shrubs of the mimosa family that originated in Australia, has long been used there in building simple mud and stick structures. The Acacia is called a wattle in Australia,

1. With which of the following topics in the passage primarily concerned?
B. Characteristic and varieties of the acacia
2. How many species of acacia grow well in the southern united states?
B. Three hundred
3. The word thrive paragraph 2 is closest in meaning to which of the following?
A. Grow well
4. The word these in paragraph 2 refers to ?
A. United states 
5. According to this passage, the silver wattle ?
C. Is taller than the bailey acacia 
6. In paragraph 2, the word flat most nearly means ?
A. Smooth 
7. The word showy in paragraph 2 could best be replaced by ?
B. Elaborate
8.Which of the following acacias has the least colorful blossoms?
D. Black acacia
9. Which of the following would most probably be made from a black acacia tree?
B. A table
10 whendo acacia trees bloom in australia?
A. February

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Although stage plays has been set to music since the era of the ancient Greeks, when the dramas of Sophocies and Aeschylus were accompanied by lyres and flutes, the usual accepted date for the beginning of opera as we know it is 1600

1) C. The development of opera
2) C. At the beginning of the sixteenth century
3) C. Era
4) A. Greek tragedy
5) D. For the wedding of King Henry IV
6) A. A group of Greek musicians
7) C. Modify
8) C. Stories
9) C. The Italian phrase that means “musical works”